Well, why would you even talk about a guy who doesn't have a full stack, doesn't make a normal 3bet to take him as a reg. He is no way a reg here.
And what do you mean by reg? Good player? Reg could easily be even a fish who just plays regularly. Or do you take reg = good player?

Taken into account his lines here as min3-bet and then even 5bet like that we are more often going to be against traps there. It's also ZOOM so it's very likely that fish sits on a strong hand there and he is 3betting a MP range. I would fold vs his 5bet there.